Selection

Name	Type	Description	Sample Data
IsLastModified	timestamp	Timestamp of when the source log file was last modified in object storage. New in V3, and used to run incremental, de-duplicated transfers so that only files changed since your last successful sync are re-read.	2026-06-09 14:32:10.000
Id	string	Original selection identifier. A unique ID is generated for each ad selected.	"a1b2c3d4e5f6g7h8i9j0"
SelectionId	string	Unique identifier for the selection record, generated as MD5 hash of concatenated fields	"90e19b84e78f436286aa4195140c2998"
EventCreatedOn	timestamp	Unix timestamp in milliseconds when the event, in this case selection, was created	1735689600000
AdId	bigint	Identifier for the ad	123456789
AdTypeId	bigint	Type identifier for the ad	1
AuctionBids	bigint	Number of bids in the auction	5
AdvertiserId	bigint	Identifier for the advertiser	2325487
BurnIn	boolean	Flag indicating if the the ad is still in burn-in phase when the auction was conducted	true
CampaignId	bigint	Identifier for the campaign	123456789
ChannelId	bigint	Identifier for the channel	123456789
CreativeId	bigint	Identifier for the creative	123456789
CreativeMetadata	json	JSON array of metadata stored in a creative	`{"customData": {"hello": "world"}}`
Datacenter	boolean	Flag indicating if the impression was served from a datacenter	false
DecisionId	string	Identifier for the decision. A distinct value is created for each `placement` object in an ADR.	"90e19b84e78f436286aa4195140c2998"
DecisionIdx	bigint	Decision Index. If the Decision generates only one Selection (i.e. it does not originate from a multi-winner placement) then the DecisionIdx will always be 0. For multi-winner placements, the DecisionIdx will be the order of the Selection within the Decision (zero indexed).	0
DeviceBrandName	string	Brand name of the device	"Apple"
DeviceBrowser	string	Browser name of the device	"Chrome"
DeviceBrowserMajorVersion	string	Major version of the browser	"120"
DeviceBrowserMinorVersion	string	Minor version of the browser	"0"
DeviceBrowserRawVersion	string	Raw version string of the browser	"120.0.6099.130"
DeviceFormFactor	string	Form factor of the device	"mobile"
DeviceModelName	string	Model name of the device	"iPhone 13"
DeviceOsMajorVersion	string	Major version of the operating system	"15"
DeviceOsMinorVersion	string	Minor version of the operating system	"4"
DeviceOsRawVersion	string	Raw version string of the operating system	"15.4.1"
dt	string	Date partition	"2024/01/01"
Ecpm	float	Effective cost per thousand impressions	2.50
EcpmPartition	string	Partition for eCPM	"landing"
FlightId	bigint	Identifier for the flight	123456789
FrequencyCap	bigint	Frequency cap value. `1 = Hour 2 = Day 3 = Minute.`	3
GdprComputed	boolean	If true, the request has GDPR consent either from the request itself, from a UserDB record etc	true
GdprConsentRequired	boolean	Flag passed in the request indicating if consent is required	false
GdprSource	string	Source of GDPR consent information. '+' separated string of values: 'blk', 'req', 'udb', 'req'. example: 'req+udb'.	"req" or "udb"
IsValidUa	boolean	Flag indicating if the user agent is valid	true
Keywords	json	JSON array of keywords	`["shoes", "sports"]`
LocationCity	string	City name	"San Francisco"
LocationCountryCode	string	Country code. Can be referenced here.	"US"
LocationCountryName	string	Country name	"United States"
LocationDmaCode	string	DMA code	"807"
LocationLatitude	double	Latitude coordinate	37.7749
LocationLongitude	double	Longitude coordinate	-122.4194
LocationMetroCode	string	Metro code	"SF"
LocationPostalCode	string	Postal code	"94105"
LocationRegion	string	Region name	"California"
LocationSubregion	string	Subregion name	"Bay Area"
MatchingKeywords	json	JSON array of matching keywords	`["shoes", "sports"]`
MatchedSegmentIds	vector	Array of matching segments	`[154, 155]`
ModifiedPrice	float	Modified price value, for when Bid Modifiers are used	0.75
NetworkId	string	Identifier for the network	"12345"
OptimizedPrice	float	Optimized price value, after factoring in auto-bidding, second pricing and bid modifiers	0.80
PlacementName	string	Name of the placement, as specified by 'divName' in the Ad Decision Request	"homepage_leaderboard"
Price	float	Price of the Flight that is associated with the impression e.g. $20.70.	20.70
PriorityId	bigint	PriorityId of the Flight that is associated with the impression	123456
RateType	integer	Rate type of the Flight that is associated with the impression	1
RelevancyScore	float	Score indicating relevancy, requires passing in a relevancy score in the Ad Decision Request	500.0
RevenueMultiplier	bigint	Constant scaling factor (1,000,000) applied to revenue-denominated fields such as Revenue and Gmv, included for downstream conversion back to currency units.	1000000
SelectionCount	bigint	Count of the selection event, incremented by the event multiplier configured on the placement or event.	1
SiteId	bigint	Identifier for the Site that the ad is selected in	1234567
TimeZoneId	string	Identifier for the time zone	"America/Los_Angeles"
UserKey	string	Key identifying the user	"ue_e8be4e08dc0345e1b94157f104a5b2ef"
UserGroup	integer	Integer (0-99) identifying the stable, randomly-assigned bucket the user falls into. Used for holdout testing and incrementality experiments.	42
IsHoldout	boolean	Indicates whether eligible ads were intentionally withheld from this user because they were in a holdout group (used to measure incrementality).	false
HoldoutGroups	json	JSON array describing the holdout group(s) evaluated for this event.
HoldoutAdId	bigint	The ID of the ad that would have served had the user not been placed in a holdout group.	123456789
HoldoutCampaignId	bigint	The ID of the campaign associated with the holdout ad (see HoldoutAdId).	123456789
HoldoutAdHoldoutGroups	json	JSON array of the holdout groups associated with the holdout ad.
ZoneId	bigint	Identifier for the Zone that the ad is selected in	1234567
SearchTerm	string	Search Term string sent in the request	"dog food"
TargetedSearchTerms	json	JSON object of search terms configured on the flight	{"broad": {"include": ["dog food"]}}
MatchedSearchTerm	string	Search term string matching what was sent in the request	"dog food"